1328863447 has 8 divisors (see below), whose sum is σ = 1338974000. Its totient is φ = 1318783680.

The previous prime is 1328863427. The next prime is 1328863451. The reversal of 1328863447 is 7443688231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1328863447 - 2¹¹ = 1328861399 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1328863397 and 1328863406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1328863427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82963 + ... + 97675.

It is an arithmetic number, because the mean of its divisors is an integer number (167371750).

Almost surely, 2^1328863447 is an apocalyptic number.

1328863447 is a deficient number, since it is larger than the sum of its proper divisors (10110553).

1328863447 is a wasteful number, since it uses less digits than its factorization.

1328863447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15393.

The product of its digits is 774144, while the sum is 46.

The square root of 1328863447 is about 36453.5793441467. The cubic root of 1328863447 is about 1099.4111026898.

The spelling of 1328863447 in words is "one billion, three hundred twenty-eight million, eight hundred sixty-three thousand, four hundred forty-seven".